[PATCH -V9 05/20] mm/THP: Don't use HPAGE_SHIFT in transparent hugepage code
STALE4880d
From: Aneesh Kumar K.V <hidden>
Date: 2013-05-22 16:58:27
Subsystem:
memory management - thp (transparent huge page), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
From: "Aneesh Kumar K.V" <redacted> For architectures like powerpc that support multiple explicit hugepage sizes, HPAGE_SHIFT indicate the default explicit hugepage shift. For THP to work the hugepage size should be same as PMD_SIZE. So use PMD_SHIFT directly. So move the define outside CONFIG_TRANSPARENT_HUGEPAGE #ifdef because we want to use these defines in generic code with if (pmd_trans_huge()) conditional. Signed-off-by: Aneesh Kumar K.V <redacted> --- include/linux/huge_mm.h | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 528454c..cc276d2 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h@@ -58,12 +58,11 @@ extern pmd_t *page_check_address_pmd(struct page *page, #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) #define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER) +#define HPAGE_PMD_SHIFT PMD_SHIFT +#define HPAGE_PMD_SIZE ((1UL) << HPAGE_PMD_SHIFT) +#define HPAGE_PMD_MASK (~(HPAGE_PMD_SIZE - 1)) #ifdef CONFIG_TRANSPARENT_HUGEPAGE -#define HPAGE_PMD_SHIFT HPAGE_SHIFT -#define HPAGE_PMD_MASK HPAGE_MASK -#define HPAGE_PMD_SIZE HPAGE_SIZE - extern bool is_vma_temporary_stack(struct vm_area_struct *vma); #define transparent_hugepage_enabled(__vma) \
@@ -181,9 +180,6 @@ extern int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vm unsigned long addr, pmd_t pmd, pmd_t *pmdp); #else /* CONFIG_TRANSPARENT_HUGEPAGE */ -#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) -#define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; }) -#define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; }) #define hpage_nr_pages(x) 1
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1.8.1.2